Automatic dado, equalizer, and variety woodworking machine



March 30 1,926'. l

w. l. CARR AUTOMATIC mno, EQuALlzER, AND VARIETY woonwonnxa nerim:

.2 Sheets-Sheet 1 March 30 ,1926.

. w. 1. CARR AUTOMATIC DADO, EQUALIZER, AND VARIETY WOODWORKING MACHINE 2 sheets-sheet '2 Filed April 20. 1925 l INVENTOR, c2 auf @awz' ada, ATTORNEY.

Patented Mar. 30,l 1926.

UNITED? sTATEs M'TEN'I*v oFEI-jcE.-

, WILLIAM' '1. CARR, oF IBELLINGHAM, WASHINGTON,

. ,AUTOMATIC Dano, EQUApizER, AND VARIETY Woonwonxme MACHINE; Y

iApplication led pril 20, 1925. Serial No.y 24,467." n

To all whom it may cof/wein:

Be it known thatfI, VILLIAM I. GARR, a citizen of the United States, and aresident of Bellingham, in the countyv of `Whatcom and State ofWaShington, have invented` a new and useful Automatic Dado, Equalizer,

. and Variety Woodworking Machine, of

whichthe following is a specification.

My invention relates to improvements in automaticdado, equalizer and variety woodworking machines whereby straight 'and bevel cuts in all combinations are made by automatically moving cutters. Y

I have applied for .-two patents of the United States: one filed Aug. 28,' 1923,-Se-

Irial No. 659,718, and the other filed MayQ,

1924,` Serial No. 716,059, of which the pres ent invention is an improvement. And the `object of this improvement is to provide an automatic dado, equalizer and -variety woodworking machine in which the saw carriages of two fully equipped and adjustable machines are driven by an electric motor ony one machine by means ofa'shaftcommon to both machines and having but Aone universal joint therein. v

I attain this object with the mechanism il,- lustrated in thek accompanying two sheets of drawings, which form a part of this specilisation, and in which Figure 1 is a plan view of myfcombined machines wherein the pivoted machine is illustrated in full lines Uin a diagonal position and in dotted lines in a position parallel with its'fcompanion machine and the designating characters referring to parts of the full-line drawing are the primes of the characters referring to sim'- vilar parts of the dottedline drawing, Fig. 2 is a front elevation of the combined machines showing the pivoted machine parallel with the companion machine, Fig.` 3 is a side elevation ofthe pivoted machine, and Figs. f1 and 5 are end elevation and side elevation in section, respectively, of the sliding sprocket drawn o-n a larger scale. Similar characters refer to similar parts throughout. Certain parts are broken away to show other parts hidden thereby.

' More particularly: Parallel rails'l, 4 are fastened to the ioor and provide a track with which groovesin base a5 of the said companion Amachine engage for reciprocal adjustment thereon. panion machine is mounted table ,6, ,for which vertical adjustment is provided by mechanism connected to hand wheel a6' and On frame 45 of the comalso for which tilting adjustment is provided by mechanism connected to hand wheel b, about the center of segment c6.

On subbase 7 "the pivo-ted ymachine is mounted. l Said subbase is fastened .to 1 the floor. Frame 8 of'vsaid ypivoted machine has base a8 which is engage'dwith, subbase 7 by pvot boltl 1() vhaving vertical axis The rear end of base as is arcuate about pivot axis m-and is engaged by graduated arcuate` guide l1 having internal gear teeth 12. Hand vwheel 13 is vertically mounted forrevolution in va bearing fastened to base a8 and has a pinion on its lower` end, not

shown, engaged A.with teeth 12. ByY revolving hand wheel 18 the 'pivoted machine is adjustable about axis w-w and settable as desired by clamping screw 14: engaged 1n base as.v A yElectric motor 15 is mounted on base 'as with its shaft transversally of frame 8. lOn l the right-handA end of. said motor shaft is fastened sprocket 311., Onone end of worm shaft L37 is fastened sprocket 36 in chain: re'

lation vwith sprocket '345.' Silentchain Vconnects sprockets 34 and `36Y for simultaneous revolution.4 Worm B7 is engaged with "Q- worm wheel 38 which is fastened on the` front end of theshaft at?" of camrfslot cylinder 40. Cutter carriagefll is reciproca-ble on longitudinal guides on frame S and is operated byv arms 39 the lower ends of which are p'ivoted to l said machine frame. f' The ycentral parts of said arms mount wheels which are engaged with the cam slots of cylinder 410. Thus the -revolutionvof said cylinder 40 causes arms 39 to vibrate. The

upper ends of said arms are connected to carriage 11. Hence, motor 15 causes the reciprocation of carriage 41. Electric motor 42 is mounted on carriageil and has` cutter 45 mounted `on one end of its shaft forv revolu- .tion therewith. ASprocket 19 is fastenedk on `one end of hollow shaft 1219 for revolution therewith, see Figs. l: and 5.

shaft is mounted on shaft 17 with which it is Said hollow engaged by key 20. Said key is fastened in hollow shaft Zal-9 and reciprocable in key slot 18 in shaft 17. Thus sprocket 19 is caused to revolve by shaft 17 in any setting of mac-hine 5, 6 on tracks lc-4. Sprocket wheel 22 is fastened on one end of shaft a2 in chain relation with sprocket 19 with which it is caused to revolve by silent chain 21. Shaft x23 is mounted in bearings on frame 5 for revolution transversally of said frame and parallel with rails et. lorm 23 on shaft L23 is enga-ged with worm wheel 24;. Said worm wheel is fastened to the front end of shaft 25 on which is mounted cam-slot cylinder 26. Shaft 25 is mounted for revolution in bearings longitudinally of frame 5. Arms 27, 27 are pivoted at their lower ends to frame for vibration and have their upper ends connected to cutter carriage 28. Wheels on the centers of said arms engage with cam slots, not shown, in cylinder 26 and the revolution of said cylinder causes said arms to vibrate and cutter carriage 28 to reciproca-te. Electric motor 29 is mountedon carriage 28 with its shaft parallel with rails 4. On one end of said motor shaft is fastened cutter 30 for revolution therewith. Screw 31 is mounted for revolution in bearings 32 and 33 fastened to the floor parallel with rails 4t. Screw 31 is engaged with nuts L31 on frame 5 and is revolvable by hand wheel (L31. 1 y

Work stop 46 is placed on the front end of tables 6 and 9, being fastened by a pin to table 6 and by a hand clamp to table 9. The work is placed on the tables to bear against the rear side of ystop 4:6 when the cutters shape the same. .lVork-holding clampv 17, which kis depressed by a coil spring beneath the head of holding` screw fr", is fastened tot-able 6 and used to hold the left-hand end of the work while the operatives hand is placed on the work near its right-hand end to hold that end down and at the same time cause the work to bear evenly against .stop 46.

The pivotal center of universal joint, 16 is, by construction, placed vertically over the center line of pivot bolt 10, as shown clearly in Figs. 2 and Z3 and also in Fig. 1 where joint 16is broken away in part to show a portion of the upper end of said bolt 10. So that when the pivoted machine is swung on pivot 1() motor 15 revolves about the center of joint 16 and shaft 17 is not disturbed but remains parallel to rails 2l. Also since sprocket 19 is revolvable by shaft 17 and reciprocable on it machine 5, 6 can be moved on rails L1- by screw 31 without interfering` with the transmission-of power from motor 17 to saw carriage 28. Tilting saw motor 4t2 in connection with pivoted machine 8, 9 provides for trimming or plowingthe right-hand end of the work at a combined Y vertical and horizontal angle,

while provision for rectangular work only is made in machine 5, G. This is all that the usual work done by such a combination of machines requires on one end. Although table 6 can be tilted, as described, this adjustment is not used when the two machines operate together.

Having thus disclosed my invention, what I claim as new and desire to secure by Letters Patent is,-

1. In machinery of the kind described in combination, va vertically pivoted machine, a transversally movable machine adjacent said pivoted machine adapted to approach and recede from said pivoted machine, a power shaft common to both of said machines, and. a universal coupling in said power shaft oscillatable about the vertical aXis of said pivoted machine.

2. In machinery of the kind describedin combination, a vertically pivoted machine, a transversally movable machine adjacent said pivoted machine, a power shaft common to both of said machines, a universal coupling in said power shaft oscillatable about the vertical axis of said pivoted machine, and an electric motor on one of said machines having power connections with said shaft. p 3. In'machinery of the kind described in combination, a vertically pivoted machine, a transversally movable machine j adjacent said pivoted machine, a power shaft common to both of said machines, a universal coupling in said power. shaft oscillatable about the vertical axis ofsaid pivoted machine, and power connectionslbetween said power shaft and the power mechanisms on each of said machines.

4i. In machinery of the character described in combination, a vertically pivoted machine, a transversally movable machineadjacent said pivoted machine, a power shaft common to both of said machines, a universal coupling in said power shaft oscillatable about the vertical axis of said pivoted machine, a reciprocable cutter carriage oneach of said machines, and power connections between each of saidcarriages and said power shaft.

5. In machinery of the character described in combination, a vertically pivoted machine, a transversallyy movable machine adjacent said pivoted machine adapted to approach vand recede from. said pivoted machine, a

power shaft common to both Vof said machines, a universalcoupling in said power shaft oscillatable about the -vertical axis of said pivoted machine, an electric motor on said pivoted machine connected to rsaid power shaft, and a `sprocket on said transversallymovable machine mounted `for revolution with said power shaft and reciprocable on said power shaft. A n

6. In machinery of the character described in combination, a vertically pivoted maaxis of said pivoted machine, and a sprocket chine, a transversally-movable machine admounted for revolution in a bearing fastened jacent said pivoted machine adapted to apto said transversally-movable machine said 10 proach and recede from said pivoted ma-y sprocket also mounted on said shaft for 5 chine, a power shaft common to both of revolution therewith and for reciprocation Vsaid machines, a universal coupling in said thereon. ,l

power Shaft oscillatable about the vertical WILLIAM I. CARR. 

